package cn.htu.edu.utils;

import org.apache.commons.codec.digest.DigestUtils;

/**
 * .@Description:
 * .@Author:dakai
 * .@Date:2021/12/1 10:25.
 */
public class MD5Utils {

    public static String md5(String src) {
        return DigestUtils.md5Hex(src);
    }

    private static final String salt = "1a2b3c4d";

    /**
     * 第一次md5
     *
     * @param inputPass
     * @return
     */
    public static String inputPassToFormPass(String inputPass) {
        String str = "" + salt.charAt(0) + salt.charAt(2) + inputPass + salt.charAt(5) + salt.charAt(4);
        System.out.println(str);
        return md5(str);
    }


    /**
     * 第二次md5
     *
     * @param formPass
     * @param salt
     * @return
     */
    public static String formPassToDBPass(String formPass, String salt) {
        String str = "" + salt.charAt(0) + salt.charAt(2) + formPass + salt.charAt(5) + salt.charAt(4);
        return md5(str);
    }


    /**
     * 两次md5
     *
     * @param inputPass
     * @param saltDB
     * @return
     */
    public static String inputPassToDbPass(String inputPass, String saltDB) {
        String formPass = inputPassToFormPass(inputPass);
        String dbPass = formPassToDBPass(formPass, saltDB);
        return dbPass;
    }


    public static void main(String[] args) {
        /**
         * 一次加密
         */
        System.out.println(inputPassToFormPass("123456"));
        System.out.println("d3b1294a61a07da9b49b6e22b2cbd7f9".equals(inputPassToFormPass("123456")));
        /**
         * 第二次加密
         */
        System.out.println(formPassToDBPass(inputPassToFormPass("123456"), "1a2b3c4d"));
        /**
         * 两次加密
         */
        System.out.println(inputPassToDbPass("123456", "1a2b3c4d"));
    }
}
